Contrast ratio results for Smmsung

Black
Contrast ratio	26041:1
Monitor model	Smmsung
Submitted	24 Dec 2008 09:22 CET, by 117.47..
Camera model	Sony DSC-W1
Processing remarks	Warning: image file 1: automatic white balance can cause inaccuracies. Warning: image file 1: Underexposed. Please increase the shutter time. Note: image file 1: suggested exposure time: 60.1 s (Set EV to +8.9) Warning: image file 2: automatic white balance can cause inaccuracies. Warning: Image ISO settings are not the same.
Screen photo	[open image]
Luminance	0.01 cd/m2
Luminance spread	0.01 cd/m2 (2 standard deviations)
Exposure value	–11.41 stops (aim for –2 to –3)
Exposure spread	1.36 stops
Area used for calculation	0.552 x 0.552
Camera settings	Exposure time: 1/8 ISO: 320 F-number: 2.8 Focal length: 38.2 mm (35 mm equivalent) Exposure compensation: 0
White
Screen photo	[open image]
Luminance	160 cd/m2
Luminance spread	30 cd/m2 (2 standard deviations)
Exposure value	–2.06 stops (aim for –2 to –3)
Exposure spread	0.27 stops
Area used for calculation	0.552 x 0.552
Camera settings	Exposure time: 1/100 ISO: 100 F-number: 2.8 Focal length: 38.2 mm (35 mm equivalent) Exposure compensation: 0

The luminance values in cd/m2 are not very reliable, since camera sensitivities can easily differ up to 50% from their nominal value. Typically, the real luminance is 30% lower than this number. The area used for calculation is chosen such that it corresponds to a viewing angle of ±14° horizontally and ±10.5° vertically, which is equivalent to viewing the screen from a distance of about 1.5 times the diagonal size.

Unfortunately, there is a lot of variation in how cameras use EXIF settings. If photos from your camera your produce unusable results, try coming back in a few days. I review submitted pictures regularly and try to fix problems.